[ahh]

Mostly market driven (I expect there are some regulatory concerns too but I don't know any offhand.) What this means is that there are very few holders of TSLA stock who are willing to lend it compared to the number of people who'd like to be short. I'm not sure precisely what that does imply about the people holding it; typical institutional holders do happily lend out stocks, which is why typical short financing costs are low.

[xondono]

It implies that a higher than average percentage of holders weren’t institutional entities, since they knew the price would go down (even if they didn’t knew the magnitude of the drop), but rather small investors unaware of the warrants

[sp332]

*NKLA